; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,make-guards-explicit,loop-mssa(licm)' < %s | FileCheck %s

declare void @llvm.experimental.guard(i1,...)
declare void @maythrow()

; Make sure that we do not hoist widenable_cond out of loop.
; Widenable conditions don't actually alias anything or throw, however
; hoisting them is not profitable because it can prevent guard widening
; in loop.
; If we want to widen guards in branch form, we need to generate them
; at the point of widenable_condition call
; (see https://github.com/llvm/llvm-project/issues/60234). Because of
; this, hoisting a widenable condition out of loop can make widening of
; in-loop conditions impossible (e.g. if they depend on loop variant). On
; the other hand, hoisting of the WC doesn't really see profitable,
; because it will be optimized away later anyways. So the test checks that
; LICM will not move it out of loop.
define void @do_not_hoist_widenable_cond(i1 %cond, i32 %N, i32 %M) {
; CHECK-LABEL: @do_not_hoist_widenable_cond(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ]
; CHECK-NEXT:    [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N:%.*]]
; CHECK-NEXT:    [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
; CHECK-NEXT:    [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]]
; CHECK-NEXT:    br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof [[PROF0:![0-9]+]]
; CHECK:       deopt:
; CHECK-NEXT:    call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ]
; CHECK-NEXT:    ret void
; CHECK:       guarded:
; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp slt i32 [[IV]], [[M:%.*]]
; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
  %guard_cond = icmp slt i32 %iv, %N
  call void(i1, ...) @llvm.experimental.guard(i1 %guard_cond) [ "deopt"() ]
  %loop_cond = icmp slt i32 %iv, %M
  %iv.next = add i32 %iv, 1
  br i1 %loop_cond, label %loop, label %exit

exit:
  ret void
}

define void @do_not_hoist_widenable_cond_speculate(i1 %cond, i32 %N, i32 %M) {
; CHECK-LABEL: @do_not_hoist_widenable_cond_speculate(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ]
; CHECK-NEXT:    [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N:%.*]]
; CHECK-NEXT:    call void @maythrow()
; CHECK-NEXT:    [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
; CHECK-NEXT:    [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]]
; CHECK-NEXT:    br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof [[PROF0]]
; CHECK:       deopt:
; CHECK-NEXT:    call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ]
; CHECK-NEXT:    ret void
; CHECK:       guarded:
; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp slt i32 [[IV]], [[M:%.*]]
; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
  %guard_cond = icmp slt i32 %iv, %N
  call void @maythrow()
  call void(i1, ...) @llvm.experimental.guard(i1 %guard_cond) [ "deopt"() ]
  %loop_cond = icmp slt i32 %iv, %M
  %iv.next = add i32 %iv, 1
  br i1 %loop_cond, label %loop, label %exit

exit:
  ret void
}


define void @hoist_invariant_load(i1 %cond, ptr %np, i32 %M) {
; CHECK-LABEL: @hoist_invariant_load(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[N:%.*]] = load i32, ptr [[NP:%.*]], align 4
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[GUARDED:%.*]] ]
; CHECK-NEXT:    [[GUARD_COND:%.*]] = icmp slt i32 [[IV]], [[N]]
; CHECK-NEXT:    [[WIDENABLE_COND:%.*]] = call i1 @llvm.experimental.widenable.condition()
; CHECK-NEXT:    [[EXIPLICIT_GUARD_COND:%.*]] = and i1 [[GUARD_COND]], [[WIDENABLE_COND]]
; CHECK-NEXT:    br i1 [[EXIPLICIT_GUARD_COND]], label [[GUARDED]], label [[DEOPT:%.*]], !prof [[PROF0]]
; CHECK:       deopt:
; CHECK-NEXT:    call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ]
; CHECK-NEXT:    ret void
; CHECK:       guarded:
; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp slt i32 [[IV]], [[M:%.*]]
; CHECK-NEXT:    [[IV_NEXT]] = add i32 [[IV]], 1
; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop

loop:
  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
  %N = load i32, ptr %np
  %guard_cond = icmp slt i32 %iv, %N
  call void(i1, ...) @llvm.experimental.guard(i1 %guard_cond) [ "deopt"() ]
  %loop_cond = icmp slt i32 %iv, %M
  %iv.next = add i32 %iv, 1
  br i1 %loop_cond, label %loop, label %exit

exit:
  ret void
}
